in RoboFile.php [14:21]
function getBuildRepo() {
$collection = $this->collectionBuilder();
$collection->taskDeleteDir('build')
->taskGitStack()
->stopOnFail()
->cloneShallow('git@github.com:DeloitteDigitalAPAC/qd-satis.git', 'build', 'gh-pages');
return $collection->run();
}